Check Reclining Sensor Circuit

CHECK FUNCTION

With CONSULT-II

Check operation with "RECLN PULSE" on the DATA MONITOR to make sure the pulse changes.

DATA MONITOR CONTENTS CHART

Monitor item [OPERATION or UNIT]		Contents
RECLN PULSE	-	The seat reclining position (pulse) judged from the reclining sensor is displayed

Fig 1: CONSULT II Display - DATA MONITOR

Without CONSULT-II

Check signal between driver seat control unit connector and ground, with oscilloscope.

CONNECTOR TERMINAL SIGNAL SPECIFICATION

Driver seat control unit connector	Terminals		Condition	Signal (Reference value)
Driver seat control unit connector	(+)	(-)	Condition	Signal (Reference value)
B204	9	Ground	Reclining motor operation

Fig 2: Checking Signal Between Driver Seat Control Unit Connector And Ground

OK or NG

OK: Reclining sensor circuit is OK.

NG: GO TO 2.

CHECK RECLINING MOTOR SENSOR CIRCUIT HARNESS CONTINUITY

Check continuity between driver seat control unit connector and reclining sensor connector.

CONTINUITY SPECIFICATION

A		B		Continuity
Driver seat control unit connector	Terminal	Reclining sensor connector	Terminal	Continuity
B204	9	B222	9	Yes
B204	31	B222	31	Yes

Check continuity between driver seat control unit connector and ground.

CONTINUITY SPECIFICATION

A		Ground	Continuity
Driver seat control unit connector	Terminal
B204	9		No
	31

Fig 3: Checking Continuity Between Driver Seat Control Unit Connector And Ground

OK or NG

OK: GO TO 3.

NG: Repair or replace harness.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

Check voltage between driver seat control unit connector and ground.

VOLTAGE SPECIFICATION

Terminals			Voltage (V) (Approx.)
(+)		(-)
Driver seat control unit connector	Terminal	(-)
B204	9	Ground	5

OK or NG

OK: Replace reclining sensor.

NG: Replace automatic drive positioner control unit.

Fig 4: Checking Voltage Between Driver Seat Control Unit Connector And Ground